Mel B “doesn’t believe” Geri Horner is 51 years old. The 48-year-old singer urged people to “embrace” their ages as she claimed her Spice Girls bandmate was always protective of her passport when the group went on tour so no one would find out how old she actually is. During an appearance on Olivia Attwood’s ‘So Wrong It’s Right’ podcast, Mel insisted it was “wrong” for a person to lie about their age. The host replied: “My mum was here the other day and she said, Oh no, it’s right, because I don’t even know how old she is.” Mel said: “No, well no one knows how old Geri is. No one’s seen her p…